Smart ForTwo Cabrio W453 — Reliability

W453 Convertible City 2016–present 1 engine

Reliability Summary

Engine H4B (SCe 1.0) — 72/100 ACCEPTABLE
Known Issues 3

Engine in this model

ACCEPTABLE 72

H4B (SCe 1.0)

1.0 NA

Renault H4B in a Smart box. Slow but honest. Simple 3-cyl, no turbo drama. Perfect city runabout.

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Known Issues Across All Engines

Issue Engine Severity Onset
Thermostat failure H4B (SCe 1.0) moderate 50,000 km – 100,000 km
Ignition coil failure H4B (SCe 1.0) minor 40,000 km – 80,000 km
Engine mount vibration H4B (SCe 1.0) minor 60,000 km – 120,000 km